Riveter



sept. 1,1931. 1.1. TAYLOR 1,821,410

RIVETER Filednov. 27. 1928- 2 sheets-Sheet 1 J. J. TAYLOR Sept. l, 1931.

RIVETER Filed Nov.

27. 1928 2 Sheets-Sheet 2 Patented Sept. 1, 1931 UNITED STATES PATENT OFFICE JAMES J'. TAYLOR, OF WYOMING, OHIO, ASSIGNOR TO THE STACEY BROS. GAS CON- STRUCTION COMPANY, F ST. BERNARD, OHIO, A CORPORATION OF OHIO RIVETER Application led November 27, 1928.

This invention relates to improvements in riveters particularly adaptable for riveting plates in the erection of tanks or holders, the riveter travelling upon the upper edge of the plates being riveted and yoked thereabout, sustaining a centered hammer and dolly at relatively opposite sides of the plates, with the hammer controllable preferably from the dolly side, enabling a single o operator to place and head the rivets.

An object of the invention is to provide a transportable riveter carrying a dolly and hammer in centered opposing relation, capable of control by a single operator for `3 5 placing and heading the rivets.

Another objectof the invention is to susa dolly and a pneumatic riveter hammer in opposing centered relation, the hammer provided With a clamping head for compressing 2'@ together the parts to be riveted and against :i5 accompanying drawings, forming a part of this specification, in Which:

Figure 1 is a side elevation of the improved riveter shown as mounted and tracked upon the upper end of a steel plate,

With the plate in position to be riveted to a second plate below.

Figure 2 is an end elevation from the dolly side.

Figure 3 is a section on line 3 3, Figure 1.

Figure 4 is a section on line 4 4, Figure 1.

Figure 5 is a detail side elevation of the clamping head which is capped over the hammer end.

Figure G is a section on line 6 6, Figure 1.

Figure 7 is a section on line 7--7, Figure 1.

Figure 8 is a sectional viewv through the hammer cylinder.

As the riveter is particularly adaptable for riveting together sheet metal plates used in the erection of large circular tanks or holders, it is shown in such capacity mounted and tracked upon the upper edge of a vertical plate superposed upon a second Serial No. 322,228.

plate, and capable of being tilted or swung for riveting along a vertical seam of the plates.

The riveter thus can be conveyed or shifted upon the plates, as a track, as the riveting progresses about the holder or tank, with the dolly and hammer moving as a unit at relatively opposite sides of the plate or seam and relatively centered and in line With the rivet holes in a circular roW, or een be tilted for staggered riveting or riveting along a vertical seam.

The rivets are inserted and headed, one after another, by a single operator, with the control of the hammer from the dolly side, from Which side the rivets are inserted, materially reducing the labor cost. The rivets are more uniformly compressed and headed with the dolly and hammer relatively centered, insuring a more eflicient sealing joint or seam and also facilitates the riveting operations under increased capacity.

Vith the operator positioned on the dollyl side, the side at which the rivets are inserted, he is in position to head a rivet as soon as he has the dolly positioned over the rivet.

The riveter is provided with means for initially clamping the plates together at thel seam and against the stationary dolly by a movable clamp head at the forward end of the pneumatic hammer, controlled With the control of the hammer.

The riveter comprises a yoke frame preferably formed of a pair of parallel stanchions 1 1 engaged through and secured to a cross head 8, the stanchions and head thus combined, representing a U form of structure to provide a Work receiving throat for straddling the plates to be riveted, With a hammer and dolly relatively centered and secured respectively to the opposite lower ends of the stanchions as a unit with the frame.

The stanchions preferably are engaged through split eye clamps formed integral With the cross head and at relatively oppovso site ends thereof, each clamp provided With vao matic hammer movable within aY sleeve or cylinder 8 clamped within an eye or sleeve clamp 9"studded into and fixed into the lower end ot a second stanchion in axial alignment with the dolly, the anvil end of the dolly and the hammer being relatively adjusted to accommodate Jfor the throw or stroke oi" the hammer in addition to th thickness oiplates and size of rivets.

The frame is adjustably mounted upon a carriage or trolleyA by which the rivet-er is easily transported or conveyed7 as upon the edge ot the plate or othertracking facilities, for progressively moving` or advancing the riveter for the rivet spacing along the seam,

and is also pivotally mounted upon the car-r riage, adapting the frame' to be tilted or swungr in an arc for adjusting the axis oiE the tools to various elevationsA necessary to register the tools with the axis of the rivets tov be headed.

The carriage or trolley comprises a pair of peripherally grooved wheels 10-10 arranged in tandem between a pair of opposing sidev plates or bars 1-1-11, the wheels being; relatively journalled to opposite ends of the bar. A pivot block 1'5 is-interposed between the carriage side bars 1-1-11-and pivotally connected thereto by a3 pin engagedthrough the block andside-bars. The pivot block 15 is fixed to the underside-of a crossbeam 12 forming a bolster forsupporting the yoke frame upon the carriage.

The bolster at each of its opposite ends is `provided with a pair of clamp clips 13% for engaging the stanchions and frictionally clamping the bolster to the stanchions to combine thev same rigidly with the yoke frameafter the adjustments of the frame upon the bolster have been made for changing-the-length of frame throat.

Ahanger 14 of U form is fixed centrally upon the upper side of the bolster which isengaged by a screw 16, having a threaded connection with the-hanger, and the head of the screwswivelled within a clip 18 tired tothe underside of the cross head 8. The screw is provided with a Spanner collaror flange for rotating the same by means of' a hand bar 16'. the hand normally being locked by a U clip 162 fixed to onev of the stanchions, this means serving to lock the screw against rotation when the riveter is in use; The screw provides a micrometric adjustment for the frame upon the carriage for; varying the; reach orf throat length, in addition. to the adjustment orsetting of the stanchions upon the cross head. The cross head adjustment is utilized for making what is termed coarse adjustments while the screw is relied upon for making more delicate or liner adjustments, it being recognized that the lirictional bind or clamp of the arms upon the stanchions is released previous to making any vertical adjustment of the frame upon the carriage, and the parts rcclamped after an adjustment, holding the parts in their set position under the heavy vibration to which the iframe is subjected when the hammer is in operation.

The pneumatic hammer may represent a commercial type of riveter hammer or gun, and in general comprises a barrel having a hand hold cap secured upon the rear end thereoiE to which the air-line or pressure connections are made, the barrel containing a reciprocating piston controlled by a valve automatically operated when the air pressure is admitted into the rear end of the barrel.

To utilize the commercial hammer,.its cap removed and the barrel 24 on the rear provided with a packing 25 and ce@ within the sleeve or cyli the eye clamp 9 upon the ower en ot one of the stanchions 1, the :ari-el stirring as a piston :ulapting the gun o be hodily moved forwardly when the air ire ad :ted into the rear end oi" the cy inder 8 te hring the cla op head 19, lixed upon tl ,rd end of the barrel 24, into ement with the work. of the Vlinder 8 his a cloh the line connecde, the connections to permit ci' longiasjustinent ot the cylinder S withye clamp 9 Adinittii ,Y air into the the cylinder and into the chainc by the cap and rear end of the eai're, innnediatcly ici-ces the barrel and its i inecimnsm as a unit'forwardly,

and n h Vld in such torward position as long as the air p" ire is maintained against the o gel, the cnil ot the barrel hcing ported to supplying the pressure to the operating mechanism within the barrel for hammer reciprocation.

the gun has twofold function; that 'ng a clamp forthe work, and a inv' hannncr for heading the rivet ol, so that the n is always in position 'for its clamping utility during the operation of the hammer.

he eye cl np 9 has stirrup 2O extending from rear end centrally, straddling the cylinder 8, with its cross bar 21 provided with a screw 22 hearing a inst the cylinder cap or herd 2G for micrmnetrically adjustder and riveter gun relative to and from the dolly 6.

rho Lne of pipe for supplying the presrlhe rear enrsure cap er lr tions' are pe beim" suffi sure iuid connects with the hammer' tapping int-o the rear end of the hammer casing and extends about the frame from one side to the opposite side, so as to bring the control to the dolly side. The pressure to the hammer may be controlled by any type of control valve stationed in the line as indicated at 4, the valve merely admitting or cutting off the pressure Huid to the hammer.

The piping is preferably clamped or rigidly fixed to the frame by means of clamp clips 23 and the connection with the end of the cylinder sufiiciently flexible to allow for the necessary longitudinal adjustment of the cylinder within the eye clamp. This, however, may be modified or other methods employed for service line connections and pressure control.

As shown, the dolly is of two-part form, comprising a stock portion secured within the eye clamp 7 and a removable anvil en! gaged into an end of the stock for anvil substitution, different shapes being utilized for various sizes of rivets. In erecting the tank, the plates are temporarily assembled and bolted together, giving the same suflicient rigidity for sustaining the necessary rigging and riveter, the carriage of the riveter engaged on the uppermost plates, bringing the riveting tools at relatively opposite sides of the seam to be riveted.

The throat or reach of the frame is adj usted to bring the tools to the proper elevation, aligned with a horizontal row of the rivet holes, whereupon it is in position for ope-ration. The operator stationed at the dolly side inserts a rivet, after which the frame is moved to bring the anvil of the dolly over the head of the rivet, whereupon the control valve is operated, admitting the pressure into the rear end of the cylinder moving' the gun forwardly for the clamping feature and operating the hammer.

The clamp head 19 connected upon the hammer valve with the forward movement thereof is brought against the seam of the plates, pressing the plates and forcing the same against the anvil about a rivet hole. This clamping pressure is maintained for the full operating' period of the hammer and released in cutting off the pressure to the hammer.

For staggered riveting, the riveter preferably is adjusted to bring the tools in line with a lowermost row of rivet holes and the frame is tilted upon the carriage to reach those holes at a higher elevation. The frame, likewise, is tilted upon the carriage for riveting along a vertical seam of the plates. i

Having described my invention, I claim:

In a riveter, a carriage constructed for travelling upon an edge of the plates to be riveted, a bolster pivotally mounted upon my name.

JAMES J. TAYLOR. 

